CODEWITHSUNDEEP
javascriptregex
php_nub_qq
php_nub_qq

Reputation: 16055

Javascript regex return capture group value

I am parsing a youtube URL and I want to get the video id but I'm having such a hard time

The only way I could come up with is this

href = 'https://www.youtube.com/watch?v=-UI86rRSHkg'

...

video = href.replace(/^.*?youtube\.com\/.*?v=(.+?)(?:&|$).*/i, '$1');

But I think there must be a better way to do this.

How can I get the value of a capture group in JavaScript regex?

Upvotes: 4

Views: 383

Answers (1)

anubhava
anubhava

Reputation: 785721

To get the matched info use String#match:

var id = href.match(/\byoutube\.com\/[^?]*\?v=([^&]+)/i)[1];

And to make it even safer use:

var id = (href.match(/\byoutube\.com\/[^?]*\?v=([^&]+)/i) || [null, null])[1];

2nd approach is for the case when ?v= is missing in href variable.

Upvotes: 5

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